LTC2907 - Precision Dual Supply Monitors with One Pin-Selectable Threshold and One Adjustable Input

Features

  • Monitors Two Inputs Simultaneously
  • Three Threshold Selections for 5V, 3.3V or 2.5V Supplies
  • Low Voltage Adjustable Input (0.5V)
  • Three Supply Tolerances (5%, 7.5%, 10%)
  • Guaranteed Threshold Accuracy: ±1.5% of Monitored Voltage Over Temperature
  • Internal VCC Auto Select
  • Power Supply Glitch Immunity
  • 200ms Reset Time Delay (LTC2906 Only)
  • Adjustable Reset Time Delay (LTC2907 Only)
  • Open Drain RST Output
  • Guaranteed RST for V1 >= 1V or VCC >=1V
  • Low Profile (1mm) SOT-23 (ThinSOT™) and Plastic (3mm x 2mm) DFN Packages

Typical Application

LTC2907 Typical Application
LTC2907 Typical Application

Description

The LTC®2906/LTC2907 are dual supply monitors intended for systems with multiple supply voltages. The dual supply monitors have a common reset output with delay (200ms for the LTC2906 and adjustable using an external capacitor for the LTC2907). These products provide a precise, space-conscious and micropower solution for supply monitoring.

The LTC2906/LTC2907 feature a tight 1.5% threshold accuracy over the whole operating temperature range and glitch immunity to ensure reliable reset operation without false triggering. The open drain RST output state is guaranteed to be in the correct state for V1 and/or VCC down to 1V.

The LTC2906/LTC2907 also feature one adjustable input with a nominal threshold level at 0.5V, another input with three possible input threshold levels, and three supply tolerances for possible margining. These features provide versatility for any kind of system requiring dual supply monitors. Two three-state input pins program the threshold and tolerance level without requiring any external components.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LTC2907CDDB#PBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2907CDDB#TRMPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2907CDDB#TRPBF 3x2 DFN-8 DDB C 05-08-1702 Yes
LTC2907CTS8#PBF SOT-23 TS8 C 05-08-1637 Yes
LTC2907CTS8#TRMPBF SOT-23 TS8 C 05-08-1637 Yes
LTC2907CTS8#TRPBF SOT-23 TS8 C 05-08-1637 Yes
LTC2907IDDB#PBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2907IDDB#TRMPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2907IDDB#TRPBF 3x2 DFN-8 DDB I 05-08-1702 Yes
LTC2907ITS8#PBF SOT-23 TS8 I 05-08-1637 Yes
LTC2907ITS8#TRMPBF SOT-23 TS8 I 05-08-1637 Yes
LTC2907ITS8#TRPBF SOT-23 TS8 I 05-08-1637 Yes


LTC2907 Package Drawing
LTC2907 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LTC2907CDDB#PBF 3x2 DFN-8 C $1.97 Yes
LTC2907CDDB#TRMPBF 3x2 DFN-8 C $1.97 $1.43 Yes
LTC2907CDDB#TRPBF 3x2 DFN-8 C $1.97 $1.41 Yes
LTC2907CTS8#PBF SOT-23 C $1.97 Yes
LTC2907CTS8#TRMPBF SOT-23 C $1.97 $1.43 Yes
LTC2907CTS8#TRPBF SOT-23 C $1.97 $1.41 Yes
LTC2907IDDB#PBF 3x2 DFN-8 I $2.23 Yes
LTC2907IDDB#TRMPBF 3x2 DFN-8 I $2.23 $1.58 Yes
LTC2907IDDB#TRPBF 3x2 DFN-8 I $2.23 $1.56 Yes
LTC2907ITS8#PBF SOT-23 I $2.23 Yes
LTC2907ITS8#TRMPBF SOT-23 I $2.23 $1.58 Yes
LTC2907ITS8#TRPBF SOT-23 I $2.23 $1.56 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Applications

  • Desktop and Notebook Computers
  • Handheld Devices
  • Network Servers
  • Core, I/O Monitor

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Design Tools

LTspice

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Models for the following parts are available in LTspice:
LTC2907

Technical Support